Turbine.



AfmBNA-ST.

I TURBINB.

.APPLICATION FILED SEPT. 26, 1910.

1,022,683., Patented Apr. 9, 1912.

2 SHEETS-SHEET 1.

y A. KIENAST.

TURBINB. l

'APPLIOATION FILED SEPT. 2s, 1910. 1,022,683, v Patented Apr. 9,'1912. z'sHEBTs-SHBBT2.

Figft v A* AUM/mfg .A

ARNOLD KIENAsr, or LEIPZIG, GERMANY.

' TURBNE.

T0 all who-m t may concern n Be it known that I, ARNOLD KIENAST, citizen of Switzerland, residing at Leipzig,

Germany, have invented certain Vnew and useful improvements in Turbines, of which the following is a specification.

My invention relates to turbines for Aabsorbing or supplying power and may be applied to turbines of the axial or tangential type.

My invention relates more particularly to turbines so constructed that the impelling fluid, whether air, steam, water, lor the equivalent passes through the same turbinewheel from one side to the other more than once.

My invention has for its object to provide a turbine with multi-stage impact and a number of rows of blade sections for every wheel.

My invention has for its object to provide,

a type of turbine with a multi-stage impact and acting upon an increasing number of rowsof blade sections on the successive admission of the power medium.

Referring to the drawings, Figpre 1 represents a central section through the plane of the turbine, a segment only of the turbine being shown; Fig. 2 represents a diagram-r matic elevation showing the sectional areas at the two ends of the lrst conduit or circulation passage; Fig. 3 is a section-view taken from above of a developed section along the line 3-3 of Fig. l; and Figs. 4

and 5 are views showing the application of my invention to a tangential turbine engine. I In the turbines shown which comprise a casing A and a relatively movable element B, the individual blades of which the moving element is composed are provided on their convex sides with transverse ribs Ci D, E, F bearing against the adjacent blades. In this way the set of blades is divided into three concentric rows of blade sections, with passages G, H, J. For the purposes of the present invention, it isimmate'rial as to how many sets of blades are formed in this manner-and what their construction may be.. l'n place of the individual blades which are provided with ribs, the blades and ribs could be made integral with one another.

The passage ot the impelling or working fluid through one set ot' blades is illustrated in Fig. 3. The working fluid enters the wheel at L for the first time 4and passes Specification of Letters Patent.

i tions.

Patented Apr. 9., 1912.

Application led Septembeii, 1910. Serial No; 583,739.

through the same and out at M through t-he firstconduitv which it leaves at N to pass through the wheel for the second time.

1 it enters the wheel for the third time, whence it leaves at Q. rlhis operation can be repeated as many times as desired. The conduits which are successively traversed by the steam in thus passing through the turbine more than once are alternately arranged on opposite sides of the blade sec- N ow 'according to the presnt inven-v At l U it flows into the second conduit, and at tion the circulation and return flow of the' nozzle L is equal to that. of the blade secj tionsGr, so that during the first impact the driving medium passes between L and M only through the passages G.

The dotted lines` in Figs. l and '2 indicate the manner .inwhich the conduit-or circulation passage overlaps only the outer row of blade sections at M whence it expands radially to the height or level of the blade sections G, H, thus conveying the working fluid from N to the outer and next following group of blade sections. In this manner a constantly increasing number oi" rows of blade sections are operated upon. For axial admission the conduits need only vary in their radial dimensions and inversely in wheels with radial'admissi'on the rated by ribs running at right angles to the.

axis instead of parallel thereto and the conduits instead of becoming deeper radially for each successive conduit, now retain the same radial depth but become wider axially.

My invention may be used with turbines..

provided with any desired number of blades and said blades may be ot any desired size,

whether large or.'small, without losingthe advantages of said invention.

-While I havedescribed my invention as adaptedto'a turbine used as a source 'of power it lmay also be applied to a turbine driven by power-.for the vpurpose of blowythan once,c said conduits being shaped to supply steam to an increased number otl rows at each passage. i

2. In a turbine having blades .provided with ribs between the blades so as to form a plurality of rows of blade sections, means comprising conduits alternately arranged on opposite sides of said blade sections adapted to pass steam through said turbine more than once and to supply steam to an increased number of rows at each passage, said conduits widening in a direction parallel with the blades and normal to said ribs.

3. ln a turbine having blades divided by ribs into a plurality of radially arranged,

blade sections, means. comprising conduits for passing steam through said turbine more than once, said conduits Widening continuously in a radial direction.

4. In a single wheel turbine, in combina tion, a casing,` a relativelymovable element comprising a plurality of rows of blade sections, and a plurality of conduits fixed to said casing and alternately arranged on opposite sides of said relatively movable element Jfor passing steam through said element more than o-nce7 said conduits being shaped to supply lsteam to an increased vnumber of'rows at each passage.

In testimony whereof I have hereunto set my hand inthe presence of two subscribing witnesses.

Y l o ARNOLD KIENAST.

lVitnesses: A

i RUDOLPH FRICKE,

ALBERT R. MonAwE'rZ.

fwopies nf this patent may ne obtained for ve cents each, by addressing the Gommissioner of vPatents, Washington, 3).,0. 

